Method for Pumping Hydrocarbons
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United States of America Patent
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Sep 10, 2015
app pub date -
Oct 24, 2013
filing date -
Oct 31, 2012
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Abstract
A method of pumping a hydrocarbon fluid from a wellbore (4) and a hydrocarbon completion (1) implementing the methodology is described. The method comprises deploying a tubing string (7) and a first pump system (15), in fluid communication with the tubing string, within a wellbore. The first pump system is employed to generate a production fluid (17) by heating the hydrocarbon fluid as it is pumped into the tubing string so as to form a counter current heat exchanger between the production fluid within the tubing string and the hydrocarbon fluid located within the wellbore. The counter current heat exchanger provides a means for preheating the hydrocarbon fluid before it reaches the first pump system. As a result the viscosity of the hydrocarbon fluid is reduced thus making it easier to pump to the surface. The method finds particular application within horizontal, high angle or vertical wells in heavy or extra heavy oil fields.
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